Sheet-piling.



N0 MODEL.

L. P. FRIESTEDT.

SHEET PILING.

APPLICATION FILED OCT. 9, 1902.

illi ii 1 PATENTED JULY 14, 1903.

2 SHEETS-SHEET L EATBNTED JULY 14, 19os.`

L. P. FRIESTEDT.

SHEET PILING.

APPLICATION FILED 00T. 9, 1902.

2 SHEETS-SHEET 2.

NO MODEL.

Patented July 14, 1903.

PATENT LUTHER P. FRIESTEDT, OF CHICAGO, ILLINOIS.

SHEET-PILING.

SPECIFICATION forming part of Letters Patent No. 733,713, datedV July 14, 1903.

Application filed October 9,

as will enable oth ers skilled in the art to which.

it appertains to make and use the same.

This invention relates to metallic sheetpiling to bc employed in sinking mine-shafts, deep foundations for buildings, and other work of a subterraneous character, and is also adapted to be used in the construction of submarine worksuch as sea-walls, cofferdams, docks, wharves, caissons, bridge-pier foundations, and all similar structures.

In the drawings, Figure l is Van elevation looking at one side on line l, Fig. 2, showing one form of structure in the process of assembling the different sections and forcing them into the earth. Fig. 2 is a plan showing one side and two corners of an incomplete structure of the form illustrated in Fig. l. Fig. 3 is a plan or end view of the different beam-sections in detail before being' assembled, and

Figs. -i and 5 are details relative to a waterpipe attachment for hydraulic action.

A square form of structure is used by way of illustration; but it will be readily understood that a rectangular, cylindrical, or any other desired form may be built up, as practical use shall require. In facings for seawalls, wharves, docks, and structures of an analogous character and for square, rectangular, or cylindrical form for mine or shaft sheeting a wall structure of a single thickness is presented at all points. The ordinary commercial channel-beams are usually employed as being best adapted for the purpose; but it is obvious that other forms of metal beams may be used, as the particular kind of work may require.

The metal beam-sections may be of any dcsired dimensions as to width and length, and when channel-beams are used they are ordinarily arranged in the alternating position shown-that is, the beam-sections A being set with the flanges pointing outward and the companion joining beam-sections B sct with the flanges pointin inward, or in the opposite Serial No. 126.497. (No model.)

direction. The flanges present straight edges on surfaces, and when the beam-sections are assembled they have an interlocking engagement and form a continuous solid structure.

The beam-sections are secured together in their proper relative position by means of a number of angle Z plates or bars C. These idly secured to the sections A and loosely' overlap the corners of the sections B. This arrangement may, however, be reversed, the result being substantially the same. Vhen the Z plates are secured in place, a longitudinal space a is provided between the flanges ll of the A sections and the adjacent web part 12 of the Z plates for the loose endwise insertion of the B sections, which telescope or slide into place with the greatest possible ease in assembling the parts together, but are locked against a lateral displacement. The sections A telescope into place with the same facility. An end plan view of the companion sections in a disengaged position is shown in Fig. 3. The corner-construction feature is likewise clearly shown in Fig. 3 and is also the feature of running a partition or division wall from the main wall.

The corner structure comprises two L- beams 13 and le, the companion corner Z- plates l5 and 1G, and an angle corner-iron 17. The corner I -beams represent a channelbeam split through its longitudinal web center, with one half turned around at right angles with reference to the companion half and rigidly secured in that relative position by means of the angle-iron 17, inserted in the inside corner so formed and properly secured in place. The inner flange edges 1S of the corner Z-plates are riveted or otherwise secured to the opposite side of the L-beams from that of the corner-,iron 17. This brings the outer disengaged flange edges 19 into a position at right angles with reference to each IOD other in turning a corner and extending` the main wall at right angles.

In forming a connection or starting-point with the main wall in running a partition or division wall two angle-irons 2O and 2l'are rigidly secured to one of the beam-sections in the main wall, as shown in Fig. Sufficient space is left between the projecting flanges 22 of these angle-irons for the insertion of the web edge of the l--bea1n 2l. A Z-plate C is rigidly secured to one of the angle-irons, the Aouter flanged edge of which extends across the adjacent edge of the flange 25 on the L-beam 2l and providing the usual space a for the endwise insertion of the beamsections B in assembling the parts together. By this simple arrangement a division-wall may be started at any point which embodies the characteristic features and possesses the strength of the main wall.

The method followed in sinking a shaft of a square or rectangular form is illustrated in lfig. l, a plan of which is shown in Fig. 2, representing one side and two corners of such a. structure. It will be understood, as a matter of course, that the Z and angle irons are all riveted to the proper sections at the factory and transported to the place of use in two parts, sections A and B, in constructing alineal wall. Vhen the material is prepared for a square or similar forni of structure, there will be the additional corner-section, making three parts in all. It will thus be seen with what facility and rapidity the parts may be assembled in the completed structure.

In sinking' and lining up a mine or other shaft the first or bottom section of the structure as a whole will be composed of short and long beam-sections arranged alternately, so as to break joints and permit the use of beam-sections of the same length from that on to the final or top section, which is then leveled up with the alternating' short sections.

The structure as shown in Fig. l has been started into the earth, the datum line being indicated at D. The alternating short beamsections 2G end on the line Z) and are approximately one-half the length of the full beamsections, which will usuallybe of the ordinary commercial length. This method of assembling the sections as the structure is lowered always leaves the spaces 27, Ivig. l, between each alternating section, which extend some distance above the adjacent companion seetions in the course below. The lower ends of the beam-sections comprising the next course when inserted in the structure will rest on the upper ends 2 of the sections below. This order of building up is continuous as the structure is lowered into place.

In the operation of driving' one or more of the beam-sections may be driven at a time. As illustrated in Fig. l, the lower part of one of the short sections is shown as having been driven that much in advance of the other scctions composing the bottom course, the joining full-length section above being' proportionately that much lower than the adjacent sections, while the third top section last inserted extends above that of the other top sections. The relative position of the bottom sections are therefore known from the position of the top sections, so that the danger of driving any of the lower sections out of their interlocked engagement is avoided.

The operation of driving the sheet-piling and excavating for a shaft may be greatly faeilitated in some cases by use of a hydraulic attachment, and. especially so when the earth is loose and of a comparatively dry nature. As a means for this purpose a pipe 2S .maybe attached to one or more of the beam-sections, as shown in Figs. 3, l, and 5. This water-pipe will be divided into convenient lengths corresponding to that of the beam-sections and detachably joined together by means of a union-sleeve 29. The pipe-joints will be secured to the beam-sections by means of clips The discharge end of the first joint of pipe is flattened, as at g, in the direction of the middle of the beam-sections, so as to spread the discharge and increase its effectiveness in practical working.

The interlocking flanges and Z-plates form guides as well in assembling the sections in the different courses. It will also be noted that the sections being loosely joined together they may be readily and easily withdrawn in cases where a temporary structure is only required and the same material used over again.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. In a corner structure for sheet-piling the combination with the companion L-beams disposed at right angles with reference to each other, of a corner angle-iron rigidly joining said L-beams, and the companion Z -plates secured thereto, substantially as set forth.

2. In a division-wall connection for sheetpiling the combination with abeam-section in the main wall, of the companion angle-irons secured thereto, an L-beam section and a Z- plate secured to the angle-irons, substantially as set forth.

In sheet-piling, the combination with a series of metal beam-sections assembled in a wall structure, of a pipe or water-tube made up of lengths corresponding to the length of the metal sections and connected together endwise as the work of sinking the structure progresses, and means for securing the same to the metal sections, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

LUTHER I). FRIESTEDT.

lVitnesses:

J. l. DoNALsoN, L. B. CoUPLANn.

IOO

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